Apparatus for burning pulverized fuel.



fluid pressure motors ofany known an dev sired type, f- 4tust-ed byvstearn the boiler or by air under pressure, may 'subil luted therefor. it will also be app nt t...at instead of effecting thedraft through the tubes by an' exhaust ian, as herein set forth, any

. suitable variable exhaust mechanism may e used for the purpose, as for example, that shown in Fig. 2, in which a conical plug, 29, is' raised and lowered Within the exhaust i'e, 22, and thereby contracts or'enlarges the discharge area,r through a contracted nozzle, 22, connected to the outlet end of mechanism for supplying a mechanism for supplying a the exhaust pipe, in order t0 increase or diminish the exhausting action of the steam blast therefrom, as the case may be.

l "claim as my invention and desire to secure by Letters Patent zl. ln an apparatus for burning pulverized fuelthe combination of mechanism for conveying pulver'ized fuel vinto a boiler furnace, last ofair to the fuel when delivered tliereinto, power operatedvmeans for independently actuating said mechanisms, means for exhausting the gases of combustion, and manually operable means for independently controlling the operation of said .conveying .and supplying mechanisms and exhausting means.

2. lin an apparatus for burning pulverized fuel, the combination of mechanism for conveying pulveriaed fuel into -aboiler furnace,

` the fuel when deliverd thereinto, motors,

,ou exhausting the eases ofcombnstion, motors,

each. independently actuating Ione o said mechanisms, means for' exhausting 'the gases of combustion, and manually operable means for independently controlling the operation` of said motors and of the exhausting means. 3, n an apparatus for burning pulverized fuel, the combination of mechanism for conveying mechanism for. supplyin ablast of air to the juel when delivered't iereinto, means for last of air to4 ulverized fuel into 4alooiler furnace,

I' independently' actuating said mechanisms and the exhausting means, and manually operable means for independently controlof mechanism for conveying pulverized fuel into the furnace thereof, mechanism for supplying a blast of air -to the fuel when de livered t iereinto, motors, each independcnt-ly actuating one ,ofV said mechanisms, means for operatin' said-motors by steam generated in the boiler, means for exhausting the gases of combustion from the furnace, and manually openblelmeans for independently controlling the operation ofsaid motors and.. of exhausting means.

5. Thcvcombination, with a steam boiler, of a receptacle for pulveriaed fuel, a conduit leading therefrom vtothe boiler furnace, a blower discharging into said conduit, a second conduit leading into the furnace an having its outlet adjacentto that of the -irst specified conduit, a blower 'discharging into said second conduit, an'exhaustfan for exhausting the products of combustion from the furnace, motors, independently actuating said blowers and exhaust fan, and manually operable means for independently con- 6. T e combination, with a steam bo'ler, of a receptacle for powdered fuel, a conduit leading therefrom to theboiler furnace, a

'trollingx the operation of said motors.

blower discharging into said conduit,a'l secs ond conduit leading into the furnace and having its out-let adyacent to that of the first specified conduit, a blower discharging into said second conduit, an'- exhaust fan liausting the products oi combustion from the furnace, electric .motors,` independently actuating saidbloivers and exhaust fan, an electric vgenerator operated by steam from the boiler, a controller, conductors, connecte ing saidcontroller with the generator and or exv motors, and switches, independently governing the supply of electric current to the motors. f

V HERMAN F. BALL. Witnesses: J. SNowunN BELL,

EMILY L.Mrniis. 

